Jump to content
Electronics-Lab.com Community

high/ low level indicator

Recommended Posts

Will a water level indicator work with anything other than water.  What I want to do is build a circuit that will give me a good idea of how much grain is in some feed bins that you would find on a farm.  I'm tired of climbing up them to check how much grain is in them and thought I might give this a try.  I'm also new to electronics...Thanks.

Link to comment
Share on other sites

The Water Activated Alarm uses the fairly low resistance of water between its probes to work. It would also sense coins very well.
Unless your grain to be sensed is soaking wet, it won't detect it.

Maybe you could use an LED on one side of the bin shining on a light detector on the other side, if the bin is dark inside. When the grain's level in the bin drops low enough so that it unblocks the light, then the alarm sounds.

If the grain isn't too dusty then the LED and light detector can be mounted side-by-side and shining on and reflecting off a mirror on the other side.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...